diff -urN mpd/src/bund.c mpd-patched/src/bund.c
--- mpd/src/bund.c	2008-06-18 00:09:24.000000000 +0600
+++ mpd-patched/src/bund.c	2008-06-18 00:28:12.000000000 +0600
@@ -864,6 +864,7 @@
   u_char netflow_in = 0;
   u_char netflow_out = 0;
   u_char nat = 0;
+  u_char retain = 0;
   int	k;
 
   /* Args */
@@ -873,7 +874,7 @@
   if (ac > 0 && av[0][0] == '-') {
     optreset = 1; 
     optind = 0;
-    while ((k = getopt(ac, av, "nNati:")) != -1) {
+    while ((k = getopt(ac, av, "rnNati:")) != -1) {
       switch (k) {
       case 'i':
 	reqIface = optarg;
@@ -881,6 +882,9 @@
       case 't':
 	tee = 1;
 	break;
+      case 'r':
+	retain = 1;
+	break;
       case 'n':
 #ifdef USE_NG_NETFLOW
 	netflow_in = 1;
@@ -977,6 +981,8 @@
     Enable(&b->iface.options, IFACE_CONF_NETFLOW_IN);
   if (netflow_out)
     Enable(&b->iface.options, IFACE_CONF_NETFLOW_OUT);
+  if (retain)
+    Enable(&b->iface.options, IFACE_CONF_RETAIN);
 
   /* Get message channel */
   b->msgs = MsgRegister(BundMsg);
@@ -1549,7 +1555,10 @@
   char	path[NG_PATHLEN + 1];
 
   if (iface) {
-    snprintf(path, sizeof(path), "%s:", b->iface.ifname);
+	  if (Enabled(&b->iface.options, IFACE_CONF_RETAIN))
+		  snprintf(path, sizeof(path), "%s:inet", b->iface.ifname);
+	  else
+		  snprintf(path, sizeof(path), "%s:", b->iface.ifname);
     NgFuncShutdownNode(b->csock, b->name, path);
   }
   if (ppp) {
diff -urN mpd/src/iface.c mpd-patched/src/iface.c
--- mpd/src/iface.c	2008-06-18 00:09:24.000000000 +0600
+++ mpd-patched/src/iface.c	2008-06-17 23:58:45.000000000 +0600
@@ -173,6 +173,7 @@
     { 0,	IFACE_CONF_NETFLOW_IN,		"netflow-in"	},
     { 0,	IFACE_CONF_NETFLOW_OUT,		"netflow-out"	},
     { 0,	IFACE_CONF_IPACCT,		"ipacct"	},
+    { 0,	IFACE_CONF_RETAIN,		"retain"	},
     { 0,	0,				NULL		},
   };
 
diff -urN mpd/src/iface.h mpd-patched/src/iface.h
--- mpd/src/iface.h	2008-06-18 00:09:24.000000000 +0600
+++ mpd-patched/src/iface.h	2008-06-17 23:51:13.000000000 +0600
@@ -59,6 +59,7 @@
     IFACE_CONF_NETFLOW_IN,
     IFACE_CONF_NETFLOW_OUT,
     IFACE_CONF_IPACCT,
+    IFACE_CONF_RETAIN,
   };
 
   /* Dial-on-demand packet cache */